I really disliked that feature about Orkut. It would even show up when you visited a person's page who wasn't your friend. You had to think twice about visiting someone's page to see what who they are and what they've been up to. In a professional environment however, it can itself act as an introduction if the other person becomes curious to see who you are.
I doubt anybody really cared. This was not really a game changer and was just another feature.
It's a nice feature for your ego to know who is secretly stalking your profile but beyond that (and after the initial novelty) its usage fades.